Be careful with those forums on Boards.co.uk. I have spent a lot of time reading them. The posters (being english) are very technical minded, but I don't think they have as much experience as they make you want to believe. Basher and other regulars are over the hill and limited in current experience. Rasher seems to know freestyle and is actually doing it. However, it's hard to get his attention and see follow-ups to his answers. You might want to find another fin and cut it the way you describe.